Forging-machine.



J. N. CUMMINGS.

FORGING MACHINE.

APPLIUATION FILED 11u22, 1913.

1,100,227. lPatented June 16,1914.

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J. N. CUMMINGS.

' FORGING MACHINE.

APPLICATION FILED MAY z2, 1913.

1,100,227. Patented June16,1914

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COLUMBIA PLANOURAPH cn.. wAsHlNaroN. D. c.

UNITED STATES- PATENT OFFICE.

JAMES NEWTON CUMMINGS, OF LYERLY, GEORGIA.

FORGING-MAGHINE.

To all whom t may concern Be it known that I, JAMES N. CUM- MrNGs, a citizen of the United States, residing at Lyerly, in the county of Chattooga and State of Georgia, have invented certain new and useful Improvements in Forging-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to steel forging machines, and it more particularly relates to a special machine for forging plow plates.

An object of the invent-ion is to provide a machine for forming the cutting edge 0n a plow plate, and simultaneously imparting the proper curvatures to the surface of the plate.

Another object of the invention is to provide a shearing mechanism in connection with the forging mechanism, whereby the excess of material is trimmed from the edges immediately after the forging operation has been completed.

Another object of the invention is to provide a forging mechanism of this character and a trimming mechanism of this charac-` ter which are operatively connected, so that the only manual operation which is necessary consists in placing the blanks, from which the plow plates areto be formed, upon the anvil of the machine and removing the finished plow plates therefrom.

Another object of the invention is to provide for accurately adjusting the anvil relative to the presser' element.

A still further object of the invention is to provide for accurately adjusting the movable cutter or shearing element relative to the forward portion of the anvil which latter constitutes the stationary element of the shearing mechanism.

Another object of the invention consists in so uniting a series of anvils and pressers in coperative relation with one common driver shaft and one common presser carrying shaft, that all ofthe forging machines of the series operate as a single machine, so that one operator may be continually occupied in placing the blanks upon the several anvils, while another operator may be constantly employed in removing the finished Specification of Letters Patent.

Application filed May 22, 1913.

Patented June 16, 1914.

serial No. 769,230.

plow plates, thereby greatly increasing the output of said plow plates beyond the present output, consistent with the amount of power, time and labor consumed.

Another object is to provide a machine of this character which is comparatively simple of construction, compact, economical of manufacture and maintenance, and thoroughly efficient in operation.

Other objects and advantages may be recited hereinafter and in the claims.

In the accompanying drawings, which supplement this specification, Figure 1 represents aside elevation view, partly in section, of my improved forging machine. Fig. 2 represents a fragmenta-l sectional view taken on the line 2--2 of Fig. l. Fig. `3 represents a rear view of one of the forging machines of the series. Fig. 1 represents a perspective view, partly in section, of my improved adjustable trimming or shearing blade, and, Fig. 5 represents a side elevation View of a modification, illustrating the principles of my invention embodied in manually operated machines of this character.

The invention consists essentially of the frame 6 provided with bearings 7, in which are journaled shafts or axles 8 and 9, to which are secured gears 10 and 11, the latter being in mesh with each other. A bed 12 is rigidly fixed between the vertical portions of the frame G at a distance above the lower shaft 9. The upper surface of the bed 12 is channeled and the walls of said channel are inclined so as to provide a track and bearing for the carriage 13. One of the longitudinal edges of the carriage 13 is extended laterally thereof and the under side of the lateral extension is provided with teeth 14 which are meshed with a pinion 15 fixed to the lower shaft 9 and is of considerable less diameter than the gears 10 and 11. The upper face of the carriage 13 is provided with a channel similar to the cha-nnel in the bed 12, and the former channel slidably receives and guides an anvil-block 16. The anvil-block 16 is movable to' various positions along the carriage 13, and is rigidly secured in adjusted posit-ion by the block 17 and hand-screw 18.

A presser-block 19 is rigidly fixed to the upper shaft 8 and is adapted to impart oscillatory movement to the latter and to the lower shaft 9 through the medium of the gears 10 and 11 by a means which will be hereinafter more clearly set forth.

The main or drive shaft 20 of the machine is mounted either in a forwardly inclined portion of the frame 6, or in separate bearings provided therefor. A crank 21 is interposed between portions of the shaft 2O and is connected with an arm 22 of the presser-block 19 by a connecting` rod 23. lThus it will be seen that the rotation of the drive or main shaft 20 will impart to the upper shaft 8, through the medium of the crank 21, connecting rod 23v and arm 22, an oscillatory movement, and to the lower vshaft 9 is imparted a similar but opposite movement by the gears 10 and 11. Rotation of the pinion 15 by the shaft 9 causes the carriage 13, together with the anvilblock 16, to reciprocate over the bed 12.

As shown in the drawings the upper face of the anvil-block 16 is curved downwardly from its opposite ends so as to form the plow-plate 24 with the proper vertical curvature. In cross section (Fig. 2), the anvilblock 16 is convexed and the presser-block 19concaved to form the plow-plate 24 with the proper horizontal curvature. The forward portions 25 of both the anvil and presser blocks are somewhat enlarged and beveled. The face of the presser-block 19 is eccentric to its axis 8 in order that the distance between the anvil-block 16l and the presser-block 19 will be gradually decreased toward the end of the rearward movement, thus gradually diminishing the thickness of the point of the plow-plate 24 and forming thereon a cutting edge. The anvil-block 16 is adjustable longitudinally in the carriage 13 by the screw 18 for varying the space between the blocks 16 and 19 at the end of their rearward stroke.

A shearing blade 26, shaped in conformity to the enlarged end portions 25 of the blocks 16 and 19, is pivotally secured to arms 27 fixed to the presser-block 19. The sides of the blade 26 are adjustable in length so as to accommodate the adjustment of the anvil-block 16 within the carriage 13. The blade 26 is resiliently supported in raised position by means of a spring 28. The forward edge of the anvil-block 16 and the forward portions of the side edges thereof are sharpened so as to coperate with the sharpened lower edge of the blade 26 to trim from the plow-plate 24 the excess material.

For imparting to the blade 26 the necessary shearing movement, the same is provided with an outwardly and upwardly extending arm 29 which terminates, when the presser-block 19 is at the limit of its rearward movement, at a point rearwardly and below the drive shaft 20. A knoeker or hammer member 30 is fixed to the shaft 20 and soV adjusted as to strike the arm 29 when the anvil-block 16 and the presserblock 19 are at the limit of their rearward movement.

rI`he operation of the machine is as follows: The drive shaft 20 is connected with a suitable source of power and rotated in the direction of the arrow in Fig. 1, through the medium of the elements above described, the presser-block 19 and anvilblock 16 are continuously oscillated and reciprocated. The machine heilig entirely automatic in all of its operations, the only duty of the operator is to feed and remove the blank plates from the block 16. This is done while the block is at the end of its forward stroke. If it is desired to turn out plates having a dull or blunt point, the anvil-block 16 is adjusted forwardly upon the carriage 13, whereas if it is desired to form sharp edges for the points of the plowplates, said block 16 is adjusted rearwardly upon the carriage 13. It will be understood that each adjustment of the anvil-block 16 requires corresponding adjustment of the length of the blade 26, so that the cutting edge of the latter and of the forward end of the block 16 will be in operative position when the blow is struck by the hammer member 30 upon the arm 29.

IVhile I have shown but one machine in the drawings I wish it to be clearly understood that as many machines as are desired may be set up in series and operated from the same shafts which may be extended to any length desired.

In Fig. 5 is shown a modification of the presser-block, and this block may be readily applied to the other parts of the machine above described. The shaft 8a of the manually operable presser-block is adapted to replace the shaft 8 in the preferred form of my invention. In the modification the presser-block 19a is provided with a lever 31 which is adapted to be actuated by the operator to press the plow-plate into proper form. The presser-block 19 is provided with a second and pivoted hand-lever 32 which is connected by a link 33 to a knife 34 which is adapted to coperate with the forward cutting edge of the anvil-block 16 in the same manner as the knife 26. The pivoted hand-lever 33 is normally supported in upright position by the spring 35.

In operating the modified form of presserblock 19a, the anvil-block 16 is first shifted to the position shown in Fig. 1 by dotted lines, and a plow blank laid thereon, the lever 31 is then lowered to a horizontal position and the pivoted hand-lever 32 depressed to actuate the blade 34 to eut the excess material from the point of the blank.

The hand-lever 31 is then returned to vertical position and the finished article removed from the anvil-block 16.

What I claim as new is:

l. A combined forging and shearing machine comprising a frame7 an anvil-block slidable therein,' a pressenlolock pivoted above said anvil-block, operating means for said blocks, and a blade pivoted to said presser-block adapted to cooperate With the front edge of said anvil-block.

2. In a combined forging and shearing machine a frame, an anvil-block slidable therein, a pressenblock pivoted above said anvil-block, operating means connected With said blocks, a knife pivoted to said presserblock, and means for intermittently depressing said knife.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

JAMES NEWTON CUMMINGS.

Witnesses:

O. J. EsPY, W. J, HoGG.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

